23 Valence Theory and Constitutional Structure 1858

Description: Freshman Organic Chemistry (CHEM 125) Youthful chemists Couper and Kekulé replaced radical and type theories with a new approach involving atomic valence and molecular structure, and based on the tetravalence and self-linking of carbon. Valence structures offered the first explanation for isomerism, and led to the invention of nomenclature, notation, and molecular models closely related to those in use today. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Fall 2008.